body{
  background-color: #f1f2f5;
  padding: 10px 15px;
}
.layui-card-header{
  display: flex;
  justify-content: space-between;
}

#box{
  text-align: center;
  background-color: black;
}
#tmp-form,
#editor-form{
  padding: 15px 30px;
}
.btn{
  margin-left: 110px;
}
#preIcon{
  max-width: 75px;
  max-height: 70px;
  margin-left: 30px;
}